 | | Journal (article/letter/editorial) | | Molybdenite Mineralization at the El Teniente Cu-Mo Porphyry Deposit, Chile Edward T. Spencer,1,† Jamie J...División El Teniente, Rancagua, Chile Abstract The El Teniente Cu-Mo porphyry deposit, Chile, is one...of diorite finger porphyries and the composite Teniente Dacite Porphyry. These units acted as effective...veins and breccias. These are abundant at shallow mine levels and show a close spatial relationship with...series of concentric faults associated with the Braden Breccia Pipe. Mineralization in this paragenetic |  | | Journal (article/letter/editorial) | | the Chilean porphyry copperdepositsin the E1 Teniente (Braden), Rio Blanco, and Los Bronces (Disputada)...following conclusions, thoughbasedon the study at E1 Teniente, Rio Blanco, and Los Bronces,may alsobe applicableto...distributionof Rb in rocksfroin the leachedcapping at E1 Teniente. Due to this immobility of Rb, weathering of the...locations of E1 Teniente, Rio Blanco, and Los Bronces mines. Modified from Mapa Geo16gicade Chile, Instituto...BRECCIA PIPE I Diamond drill hole. DACITEPORPHYRY Mine workings. QUARTZDIORITE Location of sections |  | | Journal (article/letter/editorial) | | These three events are representedby amphibole-magnetite (early), K-silicate (main-stage) and feldspar-destructive(late...eralization-alteration zonation. Chlorite,K-feldspar, magnetite, and anhydrite, along with minor ruffle and apatite...Panguna. The nature of the about 1 cm in dialneter. mine intrusives and their relationshipto both contem...Alteration of three broad alteration types--amphibole-magnetite (early), K-silicate (main-stage), and feldsparDistributional...characteristics destructive(late) alteration. Amphibole-magnetite Salient distributionaland mineralogicalcharacter- |  | | Journal (article/letter/editorial) | | Recommended values for these standards larire,magnetite,pyrite, sphalerite, and molybdenite. were obtainedfrom...respectively, in altered andesitesassociatedwith the Braden porphyry copperdeposit. Althoughthe BethlehemJA..., 1971,Rubidiumas a guideto ore at E1 Teniente (Braden), Chile [abs.]: ECON.Gr.oI.., v. 66, p. 977. Brabec...Contributionsto the studyof volcanicand plutonicrocks of Chile: Unpub. Ph.D. thesis,University of Paris, 195 p |  | | Journal (article/letter/editorial) | | soon progressed to shallow depth, resulting in a mine. The numbers of mines and intensity of ACCEPTED...colonialism, modern economic booms (Belich, 2009). Active mine numbers and sizes skyrocketed during two World Wars...rapidly growing number of mineral discoveries and mine establishment was partly driven by the discovery...of conquests and non-military acquisitions. But mine importance and fame did not necessarily correspond...obsolete (for example, recent reserves of a mature mine only, or IP past production for a period of time) |  | | Book | | Orogen . 3 ¢ Radiometric Ages Near El Salvador and Potteriics, Chile . 4 ¢ Section Through Arequipa, Peru...Through Potrerillos, Chile . ; 6 ¢ Potash Index of Igneous Rocks, Atacama Rego Chile : 7 ¢ Michiquillay...Geology (Peru) . 8 © Structure at Chuquicamata, Chile . 9 ¢ Surface Geologic Map, Michiquillay 10 © Surface...Plutonic Belt, ies 27 @ Geology of the Kobuk-Koyukuk Province (Alaska). 28 © Interior Belt (Alaska). 3 ; ,...: tbe ge genes ie a Structure Visible in Gurr at El Nie : Structural Outline at Copper Basin. ; 48 ¢ |  | | Report (issue) | | Geochemical and geophysical investigations around Garras Mine, near Truro. Cornwall 3 4 Molybdenite mineralisation...associated with the Skiddaw Granite near Carrock Mine, Cumbria 8 Investigation of stratiform sulphide...Scotland 38 10 Geophysical surveys around Talnotry mine, Kirkcudbrightshire, Scotland Geophysical evidence...replacement of feldspar and as a pseudo morph (with magnetite, ilmenite, hematite and/or chlorite) after biotite...the vein samples. MULTI-ELEMENT ANALYSIS OF FIVE MINE/t ALISED ROCK SAMPLES MULTI-ELEMENT ANALYSIS OF |  | | Book | | disseminating the information, the mine geologists and mine managers who have made the mine visits a rewarding experience...oxide-group minerals (e.g., pyrite, arsenopyrite, magnetite, ilmenite), especially in metallic mineral deposits...concentration required to achieve the break-even point for a mine in terms of revenue and costs. Any detailed exploration...epochs. Following Tumeaure (1955), a metallogenic province may be defined as a mineralized area or region...The size of a metallogenic province can be as large as the Superior Province (Canadian Shield) or as small |  | | Book | | mineral is called an oxide. Hematite (Fe2 O 3 ) and magnetite (Fe 3 O4) are oxides. When carbon or phosphorus...(PO 4 )J(OH,F) Pyrite FeS 2 Calcite CaCO 3 Magnetite Fe3 O4 Contains phosphorus Main sulfur-bearing...minerals and industrial minerals such as garnet and magnetite. In other places, contact metamorphism of favorable...used. Where high-grade ore occurs at some depth, a mine shaft may be sunk and drifts (tunnels) run from...setting, which may be referred to as a metallogenic province. The porphyry copper belt in the western part |
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